DOC AIRBUS | TSM A320FLoss of the Oil Pressure Indication on Engine 1 or 2
TASK 79-00-00-810-824-A
Loss of the Oil Pressure Indication on Engine 1 or 2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
3. Fault Confirmation
Subtask 79-00-00-710-096-A ** ON A/C NOT FOR ALL
Subtask 79-00-00-865-053-A ** ON A/C NOT FOR ALL
[Rev.8 from Aug 2018]
2026.04.04 04:38:22 UTC
Loss of the Oil Pressure Indication on Engine 1 or 2
1. Possible Causes
2. Job Set-up Information
A. Referenced Information
| REFERENCE | DESIGNATION |
|---|---|
| AMM 31-55-34-000-001 | Removal of the SDAC |
| AMM 31-55-34-400-001 | Installation of the SDAC |
| AMM 73-25-34-000-040 | Removal of the Engine Interface Unit (EIU) |
| AMM 73-25-34-400-040 | Installation of the Engine Interface Unit (EIU) |
| AMM 79-33-15-000-040 | Removal of the Oil Pressure Transmitter |
| AMM 79-33-15-000-041 | Removal of the Oil Pressure Transmitter |
| AMM 79-33-15-400-040 | Installation of the Oil Pressure Transmitter |
| AMM 79-33-15-400-041 | Installation of the Oil Pressure Transmitter |
| ASM 793601 |
Subtask 79-00-00-710-096-A ** ON A/C NOT FOR ALL
A. Test
(1) Not applicable.
4. Fault Isolation(1) Not applicable.
Subtask 79-00-00-865-053-A ** ON A/C NOT FOR ALL
A. Table of the circuit breakers used in this procedure:
Subtask 79-00-00-810-082-A ** ON A/C NOT FOR ALL | PANEL | DESIGNATION | FIN | LOCATION |
|---|---|---|---|
| ** ON A/C NOT FOR ALL | |||
| 121VU | ENGINE/ENG1/OIL/PRESS | 2EN1 | N40 |
B. Replace the XMTR-OIL PRESS [4003EN] AMM 79-33-15-000-040 and AMM 79-33-15-400-040.
(1) If the fault continues:
Subtask 79-00-00-810-082-B ** ON A/C NOT FOR ALL (1) If the fault continues:
- do a check of the electrical wiring between the ENG1(2) OIL PRESS XMTR (4003EN), the EIU-1 [1KS1] ( EIU-2 [1KS2] ), the SDAC1 and the SDAC2 ASM 793601.
- do a check of the electrical grounding of the ENG1(2) OIL PRESS XMTR (4003EN) at the ground terminal on the engine fan case ASM 793601.
- do a check of the electrical wiring between the ENG1(2) OIL PRESS XMTR (4003EN) and circuit breaker 2EN1(2) ASM 793601,
- repair wiring or replace circuit breaker as required.
- repair wiring or replace circuit breaker as required.
- replace the SDAC-1 [1WV1] AMM 31-55-34-000-001 and AMM 31-55-34-400-001
- replace the SDAC-2 [1WV2] AMM 31-55-34-000-001 and AMM 31-55-34-400-001
- replace the EIU1(2) (1KS1(2)) AMM 73-25-34-000-040 and AMM 73-25-34-400-040.
B. Replace the XMTR-OIL PRESS [4003EN] AMM 79-33-15-000-041 and AMM 79-33-15-400-041.
(1) If the fault continues:
Subtask 79-00-00-710-097-A ** ON A/C NOT FOR ALL (1) If the fault continues:
- do a check of the electrical wiring between the ENG1(2) OIL PRESS XMTR (4003EN), the EIU-1 [1KS1] ( EIU-2 [1KS2] ), the SDAC1 and the SDAC2 ASM 793601.
- do a check of the electrical grounding of the ENG1(2) OIL PRESS XMTR (4003EN) at the ground terminal on the engine fan case ASM 793601.
- do a check of the electrical wiring between the ENG1(2) OIL PRESS XMTR (4003EN) and circuit breaker 2EN1(2) ASM 793601,
- repair wiring or replace circuit breaker as required.
- replace the SDAC-1 [1WV1] AMM 31-55-34-000-001 and AMM 31-55-34-400-001
- replace the SDAC-2 [1WV2] AMM 31-55-34-000-001 and AMM 31-55-34-400-001
- replace the EIU-1 [1KS1] ( EIU-2 [1KS2] ) AMM 73-25-34-000-040 and AMM 73-25-34-400-040.
C. No additional maintenance action is required if the fault is not confirmed.
(1) Repeat the fault isolation procedure if the fault continues.
(1) Repeat the fault isolation procedure if the fault continues.